I tested 6 of the best free SEO tools with AI in 2026 (here’s my top pick)

The market for AI-powered SEO tools is expanding rapidly, with many platforms promising to revolutionize content workflows. However, many free plans are too restrictive to be useful. This guide focuses on free SEO tools with AI that provide genuine value without an initial investment. We explored various platforms, from keyword research assistants to complete content generators, to identify the most effective options. One such tool capable of turning a keyword into a full blog post is the eesel AI blog writer, which is included in our review.

What are free AI SEO tools and how do they work?

AI-powered SEO tools use artificial intelligence to assist with tasks like content creation, on-page SEO analysis, competitor research, and optimizing content for AI answer engines such as Perplexity or Google's AI Overviews.

These tools represent a significant advancement over traditional SEO platforms. While older tools excel at web crawling and data collection, AI tools add an analytical layer. They don't just present data; they interpret it, offer actionable suggestions, and, in some cases, generate the content for you. To better illustrate this, here is a breakdown of the key differences.

The primary advantage is speed. Tasks that previously required hours or days can be completed much more quickly, allowing SEO professionals to focus on high-level strategy and creative planning.

Criteria for selecting these free AI SEO tools

To ensure this list is practical and useful, the selected tools were evaluated based on the following criteria:

• Truly Free: Each tool must offer a genuinely useful free plan or be completely free to try without requiring a credit card for a limited-time trial.

• Genuinely AI-Powered: The core features must leverage AI for analysis or content generation, going beyond simple marketing buzzwords.

• Actionable Output: The tools must provide tangible results, such as clear recommendations for page improvements or content ready for editing.

Comparison of the top free AI SEO tools

For those who want a quick overview, this table summarizes the top picks, highlighting what each tool does best and the primary limitation of its free plan.

The 6 best free AI SEO tools in 2026

Here’s a closer look at each tool, including its primary use case, key features, and limitations.

1. eesel AI blog writer

The eesel AI blog writer is a comprehensive content generation tool. By providing a single keyword, it produces a complete, SEO-optimized blog post with a logical structure, headings, introduction, conclusion, and assets like AI-generated images, tables, and relevant YouTube videos.

• Pros: It generates a publish-ready article, not just a first draft, which reduces editing time. The tool performs context-aware research; for example, a comparison post will include pricing data, while a technical post will feature relevant details. It also integrates real Reddit quotes and is optimized for AI Answer Engines (AEO). According to eesel, this tool was used to grow its organic traffic from 700 to 750,000 daily impressions in three months.

• Cons: The tool is focused on blog generation and does not include features for backlink analysis or technical site crawls. It is designed for creating quality content at scale, so other tools are needed for deeper technical SEO tasks.

• Pricing: It's completely free to try. You can generate your first blog post to evaluate the quality. Paid plans start at $99 for 50 blogs.

2. seo.ai

Instead of a single platform, seo.ai offers free tools as a collection of specialized AI assistants. Users can access specific tools as needed, such as their AI Keyword Tool, an AI writer for short copy, or a real-time SEO scoring feature.

• Pros: The variety of tools is beneficial for specific, one-off tasks like generating a blog title or getting instant feedback on a paragraph without navigating a complex dashboard.

• Cons: These free tools serve as a preview of their paid platform and are better suited for small jobs than for creating full-length content. Advanced features like content gap analysis require a paid plan, which starts at $149 per month.

• Pricing: The specialized tools are free to use and function as an entry point to their paid subscriptions.

3. Ahrefs' AI writing tools

From a well-known name in SEO, Ahrefs' free AI Writing Tools are designed for quick copywriting tasks. The collection includes a paragraph generator, a blog title generator, and other small utilities for creating outlines and conclusions.

• Pros: The output is high-quality, as expected from Ahrefs. The tools are user-friendly and helpful for overcoming writer's block or quickly creating versions of a meta description or social media post.

• Cons: This is a helper tool, not a full content generator, as it does not write complete articles. The focus is on smaller text snippets. It serves as a gateway to their main SEO platform, with plans starting at $129 per month.

• Pricing: The writing tools are free, with daily limits on generation.

4. Frase GEO score checker

The Frase GEO Score Checker is a unique tool focused on what Frase calls Generative Engine Optimization (GEO). It analyzes any URL to determine how well the page is optimized for AI platforms like ChatGPT, Perplexity, and Gemini.

• Pros: It is one of the few tools that provides specific scores on Authority, Readability, and Structure from an AI's perspective. It requires no sign-up, has no usage limits, and delivers instant analysis, making it ideal for quick competitor checks or auditing key pages.

• Cons: The tool is diagnostic only; it identifies issues but does not provide solutions. To improve a score, users must implement changes themselves or use the paid Frase platform, which starts at $38/month.

• Pricing: The GEO Score Checker is completely free with unlimited use.

5. AIOSEO SEO analyzer

The AIOSEO SEO Analyzer is a web tool for performing a quick health check on a page's on-page SEO. Users paste a URL to receive a report covering critical errors, metadata, content, and keywords. A free Chrome Extension is also available for in-browser analysis.

• Pros: It is simple and fast. The report provides a score out of 100 and a checklist of items to fix, which is helpful for beginners. It's a good way to identify easy-to-fix on-page mistakes.

• Cons: The analysis is limited to on-page factors and is not as comprehensive as a full site crawler. The tool is designed to encourage users to purchase their paid WordPress plugin, which starts at $49.50 per year. The free version identifies what to fix, while the paid version helps with how to fix it.

• Pricing: The online analyzer and Chrome extension are both free.

6. WordLift's free AI SEO tools

WordLift's collection of free AI tools is designed for technical SEOs working with structured data and knowledge graphs. The suite includes an Entity Extraction tool, a Structured Data Audit for schema validation, and an AI Question Answering generator.

• Pros: These tools are excellent for optimizing for semantic search. The Entity Extraction tool, for example, helps identify and mark up important concepts in content, which is crucial for modern SEO. It is a powerful free suite for technical users and requires no login.

• Cons: The terminology, such as "entities" and "knowledge graphs," may be challenging for those new to SEO. These tools are highly specialized and do not assist with general content writing. Their utility depends on the user's existing SEO knowledge.

• Pricing: The suite of tools is free to use. Their full-service plans are more comprehensive, with the Business+ plan starting at $879/month.

How to get the most out of free AI SEO tools

No single free tool can solve every SEO challenge. The key is to use them strategically as part of a larger workflow.

Free tools can take you far if you use them with structure. Most people jump between dashboards and never act. Use this stack with a weekly rhythm: Keyword research: Google Search Console + AlsoAsked (30 minutes Mondays) On-page audits: Screaming Frog free tier (crawl every 14 days) Content gaps: Ahrefs free webmaster tools (review top 10 pages weekly) SERP tracking: Ubersuggest or SearchAtlas (track 10 priority keywords) Every tool is useless without a 7-day action list after each run. Measure fixes, not data.

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• Combine Tools for a Complete Workflow: Build a custom "stack" by using different tools for different stages of your process. For example, use Ahrefs' free tools for title brainstorming, run an existing blog post through the AIOSEO Analyzer to find weaknesses, and then use a content generator for writing.

• Always Add a Human Layer: AI is an excellent starting point, but the final output should always be reviewed, edited, and enhanced with unique insights and brand voice.

• Focus on the "Why": Let AI handle the "what" (e.g., which keywords to target), but ensure the human strategist owns the "why" (e.g., why a topic matters to the audience and how it aligns with business goals).

To learn more about how to integrate various AI tools into your SEO and content creation process, the following video provides an overview of ten different options that you can use for free.

This video showcases 10 amazing free SEO tools AI and content creators can use to improve their workflow. 
Pro Tip
A great workflow is to use a generative tool like the eesel AI blog writer to create a solid, optimized foundation for your article. Then, run the final piece through an analyzer like the Frase GEO Score Checker before you hit publish. This helps ensure it's ready for both traditional search engines and the new AI answer engines.

Choosing the right free AI SEO tool

Each of these tools serves a different purpose within an SEO strategy. Specialized analyzers and rewriters are useful for specific, targeted tasks, while a comprehensive content generator can significantly save time in the content creation process. For those looking to scale their content production, a tool like the eesel AI blog writer is a strong option because it delivers a complete blog post with assets from a single keyword. The best choice depends on your specific needs, whether that's auditing a single page, generating quick copy, or producing full-length articles. We recommend trying the free versions of these tools to see which best fits your workflow.